Perforator for printing presses



1948. H. E. PETERSON PERFORATOR FOR PRINTING PRESSES Filed May 16, 1946INVENTOR.

ATTORNEY.

Patented Jan. 13, 1948 UNITED STATES PATENT OFFICE This inventionrelates to perforating mechanisms, for printing presses, and has specialreference to such a device for cylinder presses, the principal objectbeing to produce a practical, simple, and readily adjustable means forsuch purpose.

Another object is to provide such a device whereby the perforatingprocess is accomplished at the time the Work is passing through thepress, thus avoiding the necessity of subsequent action to accomplishsame.

Other objects and advantages of the invention will appear in thefollowing description thereof.

Referring now to the accompanying drawing, forming part of thisapplication, and wherein like reference characters indicate like parts:

Figure 1 is a fragmental perspective of the cylinder of an ordinaryprinting press showing one embodiment of the invention as appliedthereto.

Figure 2 is a similar perspective view, somewhat reduced, of the powersupplying mechanism for the perforating device at one end of thecylinder of the press.

Figure 3 is an enlarged vertical central section through the perforatingdisc.

i represents the cylinder of the press, such as is found upon what isknown in the trade as a Miehle cylinder press, and 2 is the driving gearor pinion at one end of the cylinder, and 3 is what is known as theintertape sleeve gear, and it is from this gear that I have shown thisembodiment of my invention as being intermittently operated.

At t is illustrated a portion of the press frame extending outwardlyfrom the main portion thereof, and there is a similar extension at theopposite end of the cylinder of the press and it is upon theseextensions that the perforating frame mechanism is pivotally supported;one of the readily adjustable holding bolts of such attachment beingillustrated at 5 so that the perforating frame may be tipped forwardlyfor the operating gears thereof to engage the constantly rotating sleevegear 3 or swung therefrom when the perforating device is not inoperation.

The perforator frame comprises the end bracket 6, of which there are twothough only one is shown, and th upper ends of which are united as bythe frame bar I, and below which, within the frame, are mounted the twoshafts ii and 9, disposed parallel with and above the cylinder I of thepress, the shaft 8 being for the support of the perforating arm iii, andthe shaft 9 being for the driving of the perforating mechanism whichwill be described later.

. the shaft [4 in transmitting power to the shaft 9,

' and which includes the set of beveled gears I5 keyed to the protrudingend of the shaft 9, and the gear IE on the shaft [4 at the upper endthereof, while a similar pair of bevel gears l1 and 18 are carried atthe lower extremity of this portion of the perforator frame. The bevelgear l8 has fixed thereto the spur gear l9 which is for selectiveengagement with the sleeve gear 3 of the press, though obviously thispower transmitting arrangement of gears or otherdevices may differmaterially from that shown without in any way departing from the spiritof the invention.

As previously stated the perforator arm I0 is carried upon the rockableshaft 8 and is adjustable longitudinally thereupon to any positiondesired as by manipulating of the clamping bolt 5, and the shaft 8 ismade rockable so that the perforating disc may be readily adjusted toaccommodate the requirements of the Work being done. For automaticallythrowing the perforating disc in or out of action, I have provided atthe opposite end of the cylinder I to that just described as the powerend, means for accomplishing same which embodies the rocker arm 2 l,keyed to the shaft 8, and extending somewhat beyond the end of thecylinder. This rocker arm 2!, carries the roller 22 upon the free endthereof, which roller is operable up and down as by engagement with thegauge block 23, adjustably held within the holding member embodying thebracket like frame 24 and the clamp 25. It will be understood that thisholding member is of accentric construction in respect to the cylinder 1for the reason that the cylinder in this type of printing press isintermittently raised and lowered during the printing process, thereforethe necessity of the holding member just described being of eccentricconstruction in relation to the end of the cylinder and adjustablymounted thereupon ily adjustable as by wing nuts indicated at 21. Thusit is readily seen that the perforating disc indicated at 28 is readilyautomatically controlled.

The perforating wheel may be of any desired type, though I haveillustrated same as being of two like halves 28 29, mounted upon thesleeve hub 30 of the sheave 3| and having clamped therebetweenthetoothed disc 32 which performs the perforating act. The sheave?isirdtatably carried upon the pin 33, mounted within the bifurcated endsof the arm I0, it being screw threaded into the outermost one, as at 34,or" otherwise attached as desired," thus providing it simple andconvenient journal forthe perforating disc. The sheave is operatedasbyab'elt"35" passing therearound at one endand around the' shaft 9 at theopposite end for simultaneously rotating the perforating disc with therotatio'ifof the shaft 9 and preferably at the same speed as thecylinder.

This arrangement of perforating disc con junction with the cylinderisfurthe'rnovel'iri that thereis' disposed intermediate of the disc andthecylinder a slotted shield plate36; adjustablysup portedin any desiredmanner as'at 31 upon the cross member 38 of the printing" pressstructureso" that it may be" a'd'j usted'longitudinally' of the cylinder when theperforatingdisc support ised justed; This' shield obviously prevents thete eth of" the disc harmfully'injuring the make ready' surface of thecylinder, and furthermore" insures adequate perforation of theperforating teeth through the sheet being printd;'as' received fromthdfeedboa'rd 39. I

Having thus described invention, virl'iaii I claim'anddesire to secureby Letters Patent, is:

1. In a cylinder printing press having a feed table, two parallel shaftsspaced above the cylinder of said press, parallel therewith and spacedforwardly of the forward edge of said table, means for rotating one ofsaid shafts coincident with the rotation of said cylinder, a perforatingdisc supported by the other of said shafts, adjustable longitudinallythereof and extending towards the forward edge of said feed table,meansfor rotatir'i'gf di'sc iro in said rgitativef sl'iaft,and anapertured foot plate for cooperative engagement with said disc andadjustable longitudinally of said cylinder.

4 2. A'sheet-perforating device for cylinder printing presses comprisingin combination two parallei'sh'a'ft's mounted above said cylinderparallel therewith: and spaced therefrom, one of said shafts beingrotatable, a perforating disc pivotally's'iipported by the other of saidshafts above the cylinder of said press, means for rotating said dis'cfrom'sa'id rotatable sha'ft at'a predetermined speed inrelation t'o'themotion'ofthe said press and simultaneouslytherewith, an apertured platebetween said dis'c and said cylinder to insure against displacement o'f'a' sheet beingperforated; and means for selectively setting theperforating" device for intermittent operation.

HENNINGE. PETERSON.

REFERENCE S CITED" I he following references are of record in the fileof this patent:

UNITED STATES PATENTS Numbe'i Name page 513,505 K ener; Apr. 17, 1904995,868 Housarn June20, 1911

